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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BCACHEFS_ALLOC_FOREGROUND_H3#define _BCACHEFS_ALLOC_FOREGROUND_H4 5#include "bcachefs.h"6#include "alloc_types.h"7#include "extents.h"8#include "sb-members.h"9 10#include <linux/hash.h>11 12struct bkey;13struct bch_dev;14struct bch_fs;15struct bch_devs_List;16 17extern const char * const bch2_watermarks[];18 19void bch2_reset_alloc_cursors(struct bch_fs *);20 21struct dev_alloc_list {22	unsigned	nr;23	u8		devs[BCH_SB_MEMBERS_MAX];24};25 26struct dev_alloc_list bch2_dev_alloc_list(struct bch_fs *,27					  struct dev_stripe_state *,28					  struct bch_devs_mask *);29void bch2_dev_stripe_increment(struct bch_dev *, struct dev_stripe_state *);30 31long bch2_bucket_alloc_new_fs(struct bch_dev *);32 33static inline struct bch_dev *ob_dev(struct bch_fs *c, struct open_bucket *ob)34{35	return bch2_dev_have_ref(c, ob->dev);36}37 38struct open_bucket *bch2_bucket_alloc(struct bch_fs *, struct bch_dev *,39				      enum bch_watermark, enum bch_data_type,40				      struct closure *);41 42static inline void ob_push(struct bch_fs *c, struct open_buckets *obs,43			   struct open_bucket *ob)44{45	BUG_ON(obs->nr >= ARRAY_SIZE(obs->v));46 47	obs->v[obs->nr++] = ob - c->open_buckets;48}49 50#define open_bucket_for_each(_c, _obs, _ob, _i)				\51	for ((_i) = 0;							\52	     (_i) < (_obs)->nr &&					\53	     ((_ob) = (_c)->open_buckets + (_obs)->v[_i], true);	\54	     (_i)++)55 56static inline struct open_bucket *ec_open_bucket(struct bch_fs *c,57						 struct open_buckets *obs)58{59	struct open_bucket *ob;60	unsigned i;61 62	open_bucket_for_each(c, obs, ob, i)63		if (ob->ec)64			return ob;65 66	return NULL;67}68 69void bch2_open_bucket_write_error(struct bch_fs *,70			struct open_buckets *, unsigned);71 72void __bch2_open_bucket_put(struct bch_fs *, struct open_bucket *);73 74static inline void bch2_open_bucket_put(struct bch_fs *c, struct open_bucket *ob)75{76	if (atomic_dec_and_test(&ob->pin))77		__bch2_open_bucket_put(c, ob);78}79 80static inline void bch2_open_buckets_put(struct bch_fs *c,81					 struct open_buckets *ptrs)82{83	struct open_bucket *ob;84	unsigned i;85 86	open_bucket_for_each(c, ptrs, ob, i)87		bch2_open_bucket_put(c, ob);88	ptrs->nr = 0;89}90 91static inline void bch2_alloc_sectors_done_inlined(struct bch_fs *c, struct write_point *wp)92{93	struct open_buckets ptrs = { .nr = 0 }, keep = { .nr = 0 };94	struct open_bucket *ob;95	unsigned i;96 97	open_bucket_for_each(c, &wp->ptrs, ob, i)98		ob_push(c, !ob->sectors_free ? &ptrs : &keep, ob);99	wp->ptrs = keep;100 101	mutex_unlock(&wp->lock);102 103	bch2_open_buckets_put(c, &ptrs);104}105 106static inline void bch2_open_bucket_get(struct bch_fs *c,107					struct write_point *wp,108					struct open_buckets *ptrs)109{110	struct open_bucket *ob;111	unsigned i;112 113	open_bucket_for_each(c, &wp->ptrs, ob, i) {114		ob->data_type = wp->data_type;115		atomic_inc(&ob->pin);116		ob_push(c, ptrs, ob);117	}118}119 120static inline open_bucket_idx_t *open_bucket_hashslot(struct bch_fs *c,121						  unsigned dev, u64 bucket)122{123	return c->open_buckets_hash +124		(jhash_3words(dev, bucket, bucket >> 32, 0) &125		 (OPEN_BUCKETS_COUNT - 1));126}127 128static inline bool bch2_bucket_is_open(struct bch_fs *c, unsigned dev, u64 bucket)129{130	open_bucket_idx_t slot = *open_bucket_hashslot(c, dev, bucket);131 132	while (slot) {133		struct open_bucket *ob = &c->open_buckets[slot];134 135		if (ob->dev == dev && ob->bucket == bucket)136			return true;137 138		slot = ob->hash;139	}140 141	return false;142}143 144static inline bool bch2_bucket_is_open_safe(struct bch_fs *c, unsigned dev, u64 bucket)145{146	bool ret;147 148	if (bch2_bucket_is_open(c, dev, bucket))149		return true;150 151	spin_lock(&c->freelist_lock);152	ret = bch2_bucket_is_open(c, dev, bucket);153	spin_unlock(&c->freelist_lock);154 155	return ret;156}157 158enum bch_write_flags;159int bch2_bucket_alloc_set_trans(struct btree_trans *, struct open_buckets *,160		      struct dev_stripe_state *, struct bch_devs_mask *,161		      unsigned, unsigned *, bool *, enum bch_write_flags,162		      enum bch_data_type, enum bch_watermark,163		      struct closure *);164 165int bch2_alloc_sectors_start_trans(struct btree_trans *,166				   unsigned, unsigned,167				   struct write_point_specifier,168				   struct bch_devs_list *,169				   unsigned, unsigned,170				   enum bch_watermark,171				   enum bch_write_flags,172				   struct closure *,173				   struct write_point **);174 175struct bch_extent_ptr bch2_ob_ptr(struct bch_fs *, struct open_bucket *);176 177/*178 * Append pointers to the space we just allocated to @k, and mark @sectors space179 * as allocated out of @ob180 */181static inline void182bch2_alloc_sectors_append_ptrs_inlined(struct bch_fs *c, struct write_point *wp,183				       struct bkey_i *k, unsigned sectors,184				       bool cached)185{186	struct open_bucket *ob;187	unsigned i;188 189	BUG_ON(sectors > wp->sectors_free);190	wp->sectors_free	-= sectors;191	wp->sectors_allocated	+= sectors;192 193	open_bucket_for_each(c, &wp->ptrs, ob, i) {194		struct bch_dev *ca = ob_dev(c, ob);195		struct bch_extent_ptr ptr = bch2_ob_ptr(c, ob);196 197		ptr.cached = cached ||198			(!ca->mi.durability &&199			 wp->data_type == BCH_DATA_user);200 201		bch2_bkey_append_ptr(k, ptr);202 203		BUG_ON(sectors > ob->sectors_free);204		ob->sectors_free -= sectors;205	}206}207 208void bch2_alloc_sectors_append_ptrs(struct bch_fs *, struct write_point *,209				    struct bkey_i *, unsigned, bool);210void bch2_alloc_sectors_done(struct bch_fs *, struct write_point *);211 212void bch2_open_buckets_stop(struct bch_fs *c, struct bch_dev *, bool);213 214static inline struct write_point_specifier writepoint_hashed(unsigned long v)215{216	return (struct write_point_specifier) { .v = v | 1 };217}218 219static inline struct write_point_specifier writepoint_ptr(struct write_point *wp)220{221	return (struct write_point_specifier) { .v = (unsigned long) wp };222}223 224void bch2_fs_allocator_foreground_init(struct bch_fs *);225 226void bch2_open_bucket_to_text(struct printbuf *, struct bch_fs *, struct open_bucket *);227void bch2_open_buckets_to_text(struct printbuf *, struct bch_fs *, struct bch_dev *);228void bch2_open_buckets_partial_to_text(struct printbuf *, struct bch_fs *);229 230void bch2_write_points_to_text(struct printbuf *, struct bch_fs *);231 232void bch2_fs_alloc_debug_to_text(struct printbuf *, struct bch_fs *);233void bch2_dev_alloc_debug_to_text(struct printbuf *, struct bch_dev *);234 235void __bch2_wait_on_allocator(struct bch_fs *, struct closure *);236static inline void bch2_wait_on_allocator(struct bch_fs *c, struct closure *cl)237{238	if (cl->closure_get_happened)239		__bch2_wait_on_allocator(c, cl);240}241 242#endif /* _BCACHEFS_ALLOC_FOREGROUND_H */243